In this Monday, July 2, 2012 photo Cathryn Sundback, director of the tissue engineering lab at Massachusetts General Hospital, holds a laboratory rat implanted with a human-scaled ear made from sheep cells at the lab in Boston. The same lab also has created ears from human cells and hopes to start implanting them in patients in about a year. With ears destined for patients - they would just be grown in a lab dish until they're ready to implant. (AP Photo/Steven Senne)

Surprising methods heal wounded troops

•September 10, 2012

Scientists are growing ears, bone and skin in the lab, and doctors are planning more face transplants